Finding the Fourth Proportional to 738,638.34, 1,107,189.30 and 311,817.95
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Solution
The fourth proportional to 738,638.34, 1,107,189.30 and 311,817.95 is: 467,402.63
Step by Step Solution
- Step 1: Write the proportion equation
738,638.34 : 1,107,189.30 = 311,817.95 : x - Step 2: Convert to fraction form
738,638.34/1,107,189.30 = 311,817.95/x - Step 3: Cross multiply
738,638.34x = 1,107,189.30 × 311,817.95 - Step 4: Simplify right side
738,638.34x = 345,241,503,801.21 - Step 5: Solve for x
x = 345,241,503,801.21/738,638.34 - Step 6: Final answer
x = 467,402.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.